Comprehensive Reverse Shoulder Data Collection

Inclusion Criteria: * Biomet® Comprehensive™ Reverse Shoulder products are indicated for use in patients whose shoulder joint has a grossly deficient rotator cuff with severe arthropathy and/or previously failed shoulder joint replacement with a grossly deficient rotator cuff. * The patient must be anatomically and structurally suited to receive the implants and a functional deltoid muscle is necessary. * The Comprehensive® Reverse Shoulder is indicated for primary, fracture, or revision total shoulder replacement for the relief of pain and significant disability due to gross rotator cuff deficiency. Exclusion Criteria: * Absolute contraindications include infection, sepsis, and osteomyelitis. * Uncooperative patient or patient with neurologic disorders who is incapable or unwilling to follow directions. * Osteoporosis. * Metabolic disorders which may impair bone formation. * Osteomalacia. * Distant foci of infections which may spread to the implant site. * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram.